package map;
import	java.util.HashMap;

/**
 * @program: thread
 * @description:
 * @author: gongj
 * @Description: TODO
 * @create: 2020-06-30 15:30
 **/
public class MapTest {
    public static void main(String args[]){
        HashMap<String, String> map = new HashMap<String, String>();
        String gongj = map.put("1", "gongj");
        System.out.println(gongj);
        String yuanj = map.put("1", "yuanj");
        System.out.println(yuanj);
    }
}
